Adtech (Spirent) AX/4000 Frame Relay Synchronous Interface board.
Model 401317.
Used - Good Working Condition.
This combination port interface provides a synchronous physical connection for the AX/4000 Frame Relay test module to connect to the following synchronous (MHz) interfaces: V.35, RS-232, RS-422, RS-423, RS-530, and RS-530A. Interface cables (not supplied) are used to provide the correct physical connector and to program the interface to the correct driver and receiver characteristics.
